Phosphate catalyst for dehydrogenation of olefinic and alkylaromatic hydrocarbons
Patents
Language: |
Немецкий |
Type: |
Invention |
Number |
DE 2325051 A1 |
Request number: |
DE1973-2325051 |
Request date: |
May 17, 1973 |
patent.field.start_date: |
|
Registration date: |
Dec 5, 1974 |
patent.field.request_publication_date: |
|
Authors |
Kotelnikow Georgij Romanowitsch
,
Bednow Stanislaw Fjodorowitsch
,
Sirotkin Boris Wasiljewitsch
,
Buschin Alexandr Nikititsch
,
Bujanow Roman Alexejewitsch
,
Strunnikowa Ljudmila Viktorowna
,
Andruschkewitsch Michail Michajlowitsch
,
Karnajew Nikolaj Alexandrowitsch
,
Troizkij Andrian Petrowitsch
|
Affiliations |
1 |
Nautschno-issledowatelskij institut monomerow dlja SK, Jaroslawl
|
|
A phosphate catalyst for the dehydrogenation of olefins and alkyl aromatic hydrocarbons has improved catalytic properties and mech. strength which provides an improved lifetime. This phosphate catalyst consists of Ca 20-40, Ni 3-6, Cr 0.5-5, Zr 0.1-15 or Ti 0.5-5, and phosphate ion 45-70%. CrO3 in aqueous H3PO4 solution was reduced electrochem. at a Ni electrode in the presence of HNO3 and HCl. The resulting solution was mixed with aqueous Ca(NO3)2.4H2O and H3PO4 and the mixed phosphate was precipitated and dried. The powder was mixed with ZrO2 and formed into tablets with graphite. This catalyst had the composition Ni 4.6, Cr 2.6, Zr 11.2, Ca 27.2, PO43- 52.4, and graphite 2.0%.